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<html lang="en">
<head>
    <meta charset="UTF-8">
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单文件测试</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.3.0/vue.js"></script>
</head>
<body>
    <!-- <div id="root">
       <App></App>
    </div> -->
    <script src="./main.js"></script>
</body>
</html>